2LM

2^2554+1 M

Open composite · C329 · component M

Target FactorDB

NFS Planning

GNFS Murphy estimate
1.85e-22
SNFS Murphy raw
1.65e-18
SNFS Murphy normalized (deg 6)
1.65e-18
Preferred method
SNFS
SNFS possible
Yes
SNFS degree
6
SNFS skew
1.56980

Identifiers

Target expression
2^1277+1+2^639
Target value
2601983048666099770481310081841021384653815561816676201329778087600902014918340074503059860433081046210605403488570251947845891562080866227034976651419330190731032377347305086443295837415395889899460163948020062123509222137032782163354878970389530362529346170965373811473297399213469559852256097293884487258970710895137490944393607998513899368326606843431383905311155219076021915484161
Target link
FactorDB page
Target ID
1100000000000641039
Target changed
Before 6/8/2026
Parent query
2^2554+1
Parent ID
1000000000012152578
Cofactor token
C329
Imported
Jun 07, 2026, 01:41 AM UTC

Raw pmain126 Factorization

858916543349369.31028012425558037.1227156720026097481648213. C329

SNFS Polynomial

Degree
6
Raw Murphy
1.65e-18
Normalized (deg 6)
1.65e-18
Skew
1.56980
Selected
Best
n: 79560867271817576243246191881856663508059786541614722047639658145630670584907289427865926096825372376593457393207345754463877516060134388528826391253960673210708332356359614563853265992971762173241849461909147948591201889904880150876837567790526767344559040096488975428267931222598621569965597992407430904600860057598740547431249
# 2^2554+1 Aurifeuillian M, difficulty: 384.72, skewness: 1.12
# cost: 6.598e+22, est. time: 31419064.18 GHz days (not accurate yet!)
# Optimized skew: 1.56980 Murphy: 1.65e-18
skew: 1.56980
c6: 1
c3: 2
c0: 2
Y1: -1
Y0: 13164036458569648337239753460458804039861886925068638906788872192
type: snfs